------- Comment #5 from sayle at gcc dot gnu dot org 2007-02-19 00:54 ------- Subject: Bug 28173
Author: sayle Date: Mon Feb 19 00:54:29 2007 New Revision: 122116 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122116 Log: PR rtl-optimization/28173 * simplify-rtx.c (simplify_binary_operation_1) <IOR>: Optimize (X & C1) | C2 as C2 when (C1 & C2) == C1 and X has no side-effects. Optimize (X & C1) | C2 as X | C2 when (C1 | C2) == ~0. Canonicalize (X & C1) | C2 as (X & (C1 & ~C2)) | C2. <AND>: Canonicalize (X | C1) & C2 as (X & C2) | (C1 & C2). * gcc.target/i386/andor-1.c: New test case. Added: trunk/gcc/testsuite/gcc.target/i386/andor-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/simplify-rtx.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28173